PuppetConf 2015

All of us have the problem of understanding what impact a change or deployment will have on our environments. We all have to answer some or all of these questions: How do you test your changes before committing them? How do you measure impact of upgrading modules? How do you pin module versions without it being painful? How to test your deployments before merging new code? How can you test your deployments before deploying and what the effect will be? We’ll talk about the tooling and processes we’ve put in place that helps us answer these questions. Based on our experiences, we will discuss how we build and use development environments, how we do code review, catalog compile tests/diffs, functional testing and integration testing.